// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-generator-function-definitions-runtime-semantics-evaluation
es6id: 14.4.14
description: Invocation of iterator `next` method
info: |
  YieldExpression : yield * AssignmentExpression

  1. Let exprRef be the result of evaluating AssignmentExpression.
  2. Let value be ? GetValue(exprRef).
  3. Let iterator be ? GetIterator(value).
  4. Let received be NormalCompletion(undefined).
  5. Repeat
     a. If received.[[Type]] is normal, then
        i. Let innerResult be ? IteratorNext(iterator, received.[[Value]]).

  7.4.2 IteratorNext

  1. If value was not passed, then
     [...]
  2. Else,
     a. Let result be ? Invoke(iterator, "next", « value »).
     [...]
features: [generators, Symbol.iterator]
---*/

function Test() {
    var args, thisValue;
    var callCount = 0;
    var spyIterator = {
      next: function() {
        callCount += 1;
        args = arguments;
        thisValue = this;
        return { done: true };
      }
    };
    var spyIterable = {};
    spyIterable[Symbol.iterator] = function() {
      return spyIterator;
    };
    function* g() {
      yield * spyIterable;
    }
    var iter = g();

    iter.next(9876);

    assert.sameValue(callCount, 1);
    assert.sameValue(args.length, 1);
    assert.sameValue(args[0], undefined);
    assert.sameValue(thisValue, spyIterator);
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
